@article{PengMittelmannLi2010, author = {Jiming Peng and Hans Mittelmann and Xiaoxue Li}, title = {A new relaxation framework for quadratic assignment problems based on matrix splitting}, journal = {Mathematical Programming Computation}, volume = {2}, number = {1}, pages = {59 -- 77}, doi = {10.1007/s12532-010-0012-6}, year = {2010}, }